Find the following values without a calculator.
Which is smaller?
- 3.9 cm or 0.39 m
- 3.4 ℓ or 340 mℓ
- 40 km or 4000 m
(a)
1 m = 100 cm
0.39 m = 0.39 x 100 = 39 cm
3.9 cm < 39 cm
3.9 cm < 0.39 m
(b)
1 ℓ = 1000 mℓ
3.4 ℓ = 3.4 x 1000 = 3400 mℓ
3400 mℓ > 340 mℓ
3.4 ℓ > 340 mℓ
(c)
1 km = 1000 m
40 km = 40 x 1000 = 40000 m
40000 m > 4000 m
40 km > 4000 m
Answer(s): (a) 3.9 cm; (b) 340 mℓ; (c) 4000 m